CN209039565U - Cementing plant - Google Patents
Cementing plant Download PDFInfo
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- CN209039565U CN209039565U CN201821664755.1U CN201821664755U CN209039565U CN 209039565 U CN209039565 U CN 209039565U CN 201821664755 U CN201821664755 U CN 201821664755U CN 209039565 U CN209039565 U CN 209039565U
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- heater
- plate
- furnace body
- unit
- cementing plant
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/02—Ohmic resistance heating
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Furnace Details (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Cementing plant has: furnace body, accommodates treated object；Multiple heaters, it is horizontally extending in furnace body；Multiple guard blocks cover heater；Supporting part is respectively arranged at the both ends of heater and supports heaters；Carburizing gas supply unit supplies defined carburizing gas to furnace body；Air supply unit supplies the air of after-flame to the gap between heater and guard block, and supporting part cools down the end of heater indirectly.
Description
Technical field
The utility model relates to cementing plants.
Background technique
It describes in following patent documents 1 in relation to the after-flame in cementing plant.Using cementing plant to treated object into
When row Carburization Treatment, the carbon component as caused by carburizing gas (i.e. coal) is attached to the inside of cementing plant, and above-mentioned after-flame is to pass through
The place that carbon (coal) on directing the air into cementing plant, make the heater being attached in cementing plant etc. burns and removes
Reason.In addition, also disclosing such after-flame in patent document 2.
Existing technical literature
Patent document
Patent document 1: No. 5830586 bulletin of Japanese Patent
Patent document 2: Japanese Laid-Open 2007-131936 bulletin
Utility model content
Utility model technical problems to be solved
However, because above-mentioned after-flame is carried out in the interval for having used cementing plant to carry out Carburization Treatment to treated object
, it so being the factor for causing the working efficiency of cementing plant to reduce, while being also the heater that damage is generated heat at high temperature
Behavior.In the case where the damage of the heater of cementing plant, heating efficiency is reduced, so even if electric power as defined in connecting, also not
Carburizing temperature can be set as preferred temperature.In cementing plant, multiple heaters are typically designed with, the damage of heater is being tieed up
Holding is technical problem of crucial importance on the device performance of cementing plant.
The utility model is completed in view of the foregoing, and its object is to inhibit the damage of heater in cementing plant.
For solving the scheme of above-mentioned technical problem
To achieve the goals above, in the present invention, as the 1st solution of cementing plant, using as follows
Scheme, have: furnace body, accommodate treated object；Multiple heaters, it is horizontally extending in the furnace body；Multiple protections
Component covers the heater；Supporting part is respectively arranged at the both ends of the heater and supports the heater；Carburizing
Gas supply part supplies defined carburizing gas to the furnace body；Air supply unit supplies the air of after-flame to institute
The gap between heater and the guard block is stated, the supporting part cools down the end of the heater indirectly.
In the present invention, as the 2nd solution of cementing plant, using following scheme: being solved the above-mentioned 1st
In scheme, the heater is set as upper layer and lower layer in a manner of clipping the treated object.
In the present invention, as the 3rd solution of cementing plant, using following scheme: the above-mentioned 1st or
It is in the 2nd solution, the supporting part has: holding element, the end abutment with the heater；Support plate, will be described
Holding element is fixed on the furnace body, by the cooling support plate, cools down the end of the heater indirectly.
In the present invention, as the 4th solution of cementing plant, using following scheme: the above-mentioned 1st~the
In 3 any solution, the supporting part has: refrigerant flow is set near the end of the heater；It is cooling
Liquid circulates in the refrigerant flow.
In the present invention, as the 5th solution of cementing plant, using following scheme: being solved the above-mentioned 4th
In scheme, have coolant liquid supply unit, adjusts the flow of the coolant liquid respectively according to each layer.
The effect of utility model
According to the utility model, it is able to suppress the damage of the heater in cementing plant.
Detailed description of the invention
Fig. 1 is the positive view of the cementing plant of an embodiment of the utility model.
Fig. 2A is the sectional view in the top electrode portion of an embodiment of the utility model.
Fig. 2 B is the overhead sectional view in the top electrode portion of an embodiment of the utility model.
Fig. 3 A is the sectional view of the lower electrode portion of an embodiment of the utility model.
Fig. 3 B is the overhead sectional view of the lower electrode portion of an embodiment of the utility model.
Specific embodiment
It is illustrated with reference now to an embodiment of the attached drawing to the utility model.
As shown in Figure 1, the cementing plant A of present embodiment has: furnace body 1, heat-insulated container 2, siege 3, multiple heaters
Unit 4, top electrode portion 5, upper grounding parts 6, lower electrode portion 7, lower grounding parts 8, carburizing gas pipe 9, exhaust pipe 10, air supply unit
11, gas recoverer 12, carburizing gas supply unit 13 and coolant liquid supply unit 14 etc..In addition, being powered in these constituent elements
Pole portion 5, upper grounding parts 6, lower electrode portion 7 and lower grounding parts 8 correspond to the supporting part of the utility model.
Cementing plant A is the device for implementing Carburization Treatment to the treated object X for being contained in carburizing room P.That is, the carburizing fills
It sets A and treated object X is heated to the temperature close to 1000 DEG C, and carburizing room P is made to be in carburizing gas atmosphere, making carbon, (carbon is former
Son) penetrate into treated object X surface, the carburized layer of prescribed depth is consequently formed.In addition, the process object of cementing plant A is
Treated object X is the metal parts that surface hardness rises due to carburized layer.
Furnace body 1 is the main body container (metal container) of approximately cuboid shape, in one side (front side in Fig. 1
Face) it is provided with shutter door (diagram is omitted).The furnace body 1 is electrically grounded (ground connection).Heat-insulated container 2 is to be arranged in furnace body 1, be in
Approximately cuboid shape and the container with thermal insulation, are formed by defined heat-barrier material (such as ceramic material).The heat-insulated appearance
The inner space (approximately cuboid space) of device 2 is the carburizing room P for accommodating treated object X.Siege 3 is mounting treated object X
Mounting table is configured at the inside of above-mentioned heat-insulated container 2 and lower part.The siege 3 by aluminium oxide etc. ceramic material (heat-insulated material
Material) it is formed.
In addition, being provided with the thermal insulation board to form the one side of heat-insulated container 2 on the inside of above-mentioned shutter door.That is, it is above-mentioned every
Heat container 2 is made of the thermal insulation board being opened and closed freely and 5 thermal insulation boards being fixedly installed for being set to the inside of shutter door.In this way
Cementing plant A in, be set to the shutter door of side before Fig. 1 by opening, treated object X be contained in carburizing room P.
Here, the left and right directions in Fig. 1 is the cementing plant A i.e. width direction of furnace body 1 and heat-insulated container 2, in Fig. 1
Up and down direction is the short transverse of cementing plant A, in addition, the direction orthogonal with Fig. 1 is the depth direction of cementing plant A.
Multiple unit heaters 4 are that have specific length and horizontally extending bar-like member, in vertical direction
On clip the mode of treated object X and configure up and down.That is, as shown in Figure 1, multiple unit heaters 4 are using axis direction as carburizing
The posture configuration of the width direction of device A (furnace body 1 and heat-insulated container 2) is in top and lower part in heat-insulated container 2.Such as figure
Shown in 2A, Fig. 2 B and Fig. 3 A, Fig. 3 B, these unit heaters 4, at intervals along cementing plant A (furnace body 1 and
Heat-insulated container 2) depth direction setting.
In addition, these unit heaters 4, (carburizing room P's is upper for the top in heat-insulated container 2 as shown in Fig. 2A, Fig. 2 B
Portion) depth direction be provided with 7, furthermore as shown in Fig. 3 A, Fig. 3 B, the depth direction of the lower part in heat-insulated container 2 is also same
Arrangement of sample plot has 7.That is, multiple unit heaters 4 are set as 2 layers up and down in a manner of clipping treated object X.
7 unit heaters 4 for being set to the top of carburizing room P are upper portion heater unit 4A.These upper portion heaters
Unit 4A, one end (left end) are supported by top electrode portion 5, and the other end (right end) is supported by upper grounding parts 6.It is set to carburizing room P's
7 unit heaters 4 of lower part are lower heater unit 4B.These lower heaters unit 4B, one end (left end) You Xia electricity
Pole portion 7 supports, and the other end (right end) is supported by lower grounding parts 8.
Such each unit heater 4 (upper portion heater unit 4A and lower heater unit 4B) is each provided with and adds
Hot device main body 4a and protection pipe 4b.One end in heater body 4a positioned at 7 side of top electrode portion 5 or lower electrode portion connects electricity
Source, furthermore the other end positioned at 8 side of upper grounding parts 6 or lower grounding parts is grounded.Heater body 4a is by from above-mentioned electricity
The columned electric heater (resistance heater) that source generates heat to the energization of one end, ceramic heater e.g. made of ceramics or
The graphite heater of person's graphite.In addition, heater body 4a corresponds to the heater of the utility model, protection pipe 4b corresponds to
The guard block of the utility model.
Protection pipe 4b is the internal diameter made of ceramics circular tube shaped component (straight tube) bigger than the diameter of heater body 4a, with covering
The mode of heater body 4a is arranged.The inner surface of protection pipe 4b and the surface of heater body 4a are in same heart shaped and to separate
Specified interval and the circular surface of parallel opposed and cylindrical surface.In addition, details will be described later, after-flame
Compressed air K circulates in the gap on the inner surface of such protection pipe 4b and the surface of heater body 4a.
As shown in Fig. 1 and Fig. 2A, Fig. 2 B, top electrode portion 5 is one end (left side for mechanically supporting upper portion heater unit 4A
End) structural body, by by one end (left end) of 7 upper portion heater unit 4A as a whole and cover in a manner of furnace body is set
1 upper left quarter.Such top electrode portion 5 have surround component 5a, the 1st plate 5b, the 2nd plate 5c, 7 support plate 5d and 7 hold
Hold in the palm component 5e etc..
Surround the metal parts that component 5a is a surface (right side) open substantially rectangular parallelepiped.The encirclement component 5a with
By one end (left end) of 7 upper portion heater unit 4A as a whole and the mode that covers is set to the upper left quarter of furnace body 1.1st
Plate 5b is metal plate, is set as being formed with the opening (circular hole) for protection pipe 4b insert, and closed encirclement component 5a's is above-mentioned
One surface.The periphery of 1st plate 5b is fixedly welded in a manner of a closed above-mentioned surface surrounds component 5a, and above-mentioned opening
Periphery be all welded in protection pipe 4b.
2nd plate 5c is metal plate, is identically formed with the opening (circular hole) for protection pipe 4b insert with above-mentioned 1st plate 5b,
And it is set as separating predetermined distance and parallel opposed in the inside and the 1st plate 5b that surround component 5a.The periphery of 2nd plate 5c welds
It is fixed on and surrounds component 5a, and the periphery being open all is welded in protection pipe 4b.
It is flowed that is, being formed by the space that encirclement component 5a, protection pipe 4b, the 1st plate 5b and the 2nd plate 5c are surrounded for coolant liquid R
Dynamic refrigerant flow 5f (confined space).In addition, be substantially confined space by the space that encirclement component 5a and the 2nd plate 5c are surrounded,
It is the air supply chamber S1 that the compressed air K of after-flame is supplied from air supply unit 11.
7 support plate 5d are twisted plate (L-shaped metal plates), with each upper portion heater unit 4A, that is, upper portion heater 4A's
Each heater body 4a is correspondingly arranged, and surface thereof is fixedly welded on the lateral surface (left side) of the 2nd plate 5c with vertical position.
In each support plate 5d, on another surface (horizontal plane) orthogonal with an above-mentioned surface, it is respectively arranged with holding element 5e.
That is, the horizontal plane of each support plate 5d is the setting face of holding element 5e.
Each holding element 5e is insulating element, is correspondingly set with each heater body 4a of upper portion heater unit 4A
It sets, each heater body 4a of support and being connected to one end (left end) of each heater body 4a of upper portion heater unit 4A
Load.As shown in Fig. 2A, Fig. 2 B, these holding elements 5e is the formed body for the substantially rectangular parallelepiped that top is formed as V-shaped groove,
One end (left end) of each heater body 4a of upper heater unit 4A is placed in the V-shaped groove to be sticked in the state of the V-shaped groove.
That is, one end (left end) of each heater body 4a is supported on furnace body 1 using top electrode portion 5.
As shown in Figure 1, upper grounding parts 6 are the structural bodies for supporting the other end (right end) of upper portion heater unit 4A, by 7
The mode that the other end (right end) of a upper portion heater unit 4A covers as a whole is set to the upper right quarter of furnace body 1.On this
Grounding parts 6, which have, surrounds component 6a, the 1st plate 6b, the 2nd plate 6c, 7 support plate 6d and 7 holding element 6e etc..
Surround the metal parts that component 6a is a surface (left side) open substantially rectangular parallelepiped.The encirclement component 6a with
By the other end (right end) of 7 upper portion heater unit 4A as a whole and the mode surrounded is set to the upper right quarter of furnace body 1.The
1 plate 6b is metal plate, is formed with the opening (circular hole) for protection pipe 4b insert, and with the closed above-mentioned table for surrounding component 6a
The mode in face is arranged.The periphery of 1st plate 6b is fixedly welded in a manner of a closed above-mentioned surface surrounds component 6a, and on
The periphery for stating opening is all welded in protection pipe 4b.
2nd plate 6c is metal plate, is formed with the opening (circular hole) for protection pipe 4b insert, and is set as surrounding component 6a
Inside and the 1st plate 6b separate predetermined distance and parallel opposed.The periphery of 2nd plate 6c, which is fixedly welded on, surrounds component 6a, and
And the periphery of opening is all welded in protection pipe 4b.
That is, being formed with by the space that encirclement component 6a, protection pipe 4b, the 1st plate 6b and the 2nd plate 6c are surrounded for coolant liquid R
The refrigerant flow 6f (confined space) of flowing.In addition, being substantially confined air by the space that encirclement component 6a and the 2nd plate 6c are surrounded
Between, it is the gas recovery room C1 from each gap recycling after-flame gas that there is total 7 protection pipe 4b and heater body 4a.
7 support plate 6d are twisted plate (L-shaped metal plates), with each upper portion heater unit 4A, that is, upper portion heater 4A's
Each heater body 4a is correspondingly arranged, and the lateral surface (right side) of the 2nd plate 6c is fixed on a surface with vertical position.At each
In board 6d, on another surface (horizontal plane) orthogonal with an above-mentioned surface, it is placed with holding element 6e respectively.
That is, the horizontal plane of each support plate 6d is the setting face of holding element 6e.
Each holding element 6e is insulating element, is correspondingly arranged with each heater body 4a of upper portion heater 4A, and
Each heater body 4a is born and being connected to the other end (right end) of each heater body 4a of upper portion heater unit 4A
Load.In the same manner as holding element 5e, these holding elements 6e is the forming for the substantially rectangular parallelepiped that top is formed as V-shaped groove
The other end (right end) of body, each heater body 4a of upper portion heater unit 4A is placed in the state for being sticked in the V-shaped groove
The V-shaped groove.That is, the other end (right end) of each heater body 4a is supported on furnace body 1 using upper grounding parts 6.
As shown in Fig. 1 and Fig. 3 A, Fig. 3 B, lower electrode portion 7 is to support one end (left end) of lower heater unit 4B
Structural body, one end (left end) of 7 lower heater unit 4B is set to the left side of furnace body 1 as a whole and in a manner of covering
Lower part.Such lower electrode portion 7, which has, surrounds component 7a, the 1st plate 7b, the 2nd plate 7c, 7 support plate 7d and 7 holding elements
7e etc..
Surround the metal parts that component 7a is a surface (right side) open substantially rectangular parallelepiped.The encirclement component 7a with
By one end (left end) of 7 lower heater unit 4B as a whole and the mode surrounded is set to the lower left quarter of furnace body 1.1st
Plate 7b is metal plate, is formed with the opening (circular hole) for protection pipe 4b insert, and is set as closed and surrounds above-mentioned the one of component 7a
Surface.The periphery of 1st plate 7b is fixedly welded in a manner of a closed above-mentioned surface surrounds component 7a, and above-mentioned opening
Periphery is all welded in protection pipe 4b.
2nd plate 7c is metal plate, is identically formed with the opening (circular hole) for protection pipe 4b insert with above-mentioned 1st plate 7b,
And it is set as separating predetermined distance and parallel opposed in the inside and the 1st plate 7b that surround component 7a.The periphery of 2nd plate 7c welds
It is fixed on and surrounds component 7a, and the periphery being open all is welded in protection pipe 4b.
That is, being formed with by the space that encirclement component 7a, protection pipe 4b, the 1st plate 7b and the 2nd plate 7c are surrounded for coolant liquid R
The refrigerant flow 7f (confined space) of flowing.In addition, being substantially confined air by the space that encirclement component 7a and the 2nd plate 7c are surrounded
Between, it is the air supply chamber S2 that the compressed air K of after-flame is supplied from air supply unit 11.
7 support plate 7d are twisted plate (L-shaped metal plates), with each lower heater unit 4B, that is, lower heater unit
Each heater body 4a of 4B is correspondingly arranged, and the lateral surface that a surface is fixedly welded on the 2nd plate 7c with vertical position is (left
Face).In each support plate 7d, on another surface (horizontal plane) orthogonal with an above-mentioned surface, it is respectively arranged with holding element
7e.That is, the horizontal plane of each support plate 7d is the setting face of holding element 7e.
Each holding element 7e is insulating element, is correspondingly set with each heater body 4a of lower heater unit 4B
It sets, and bears each heater body and one end (left end) of each heater body 4a by being connected to lower heater unit 4B
The load of 4a.As shown in Figure 3A, these holding elements 7e is the formed body for the substantially rectangular parallelepiped that top is formed as V-shaped groove, with
The state that one end (left end) of each heater body 4a of lower heater unit 4B is sticked in the V-shaped groove is placed in the V-shaped groove.
That is, one end (left end) of each heater body 4a is supported on furnace body 1 using lower electrode portion 7.
As shown in Figure 1, lower grounding parts 8 are the structural bodies for supporting the other end (right end) of lower heater unit 4B, by 7
The mode that the other end (right end) of a lower heater unit 4B covers as a whole is set to the right lower quadrant of furnace body 1.Under this
Grounding parts 8, which have, surrounds component 8a, the 1st plate 8b, the 2nd plate 8c, 7 support plate 8d and 7 holding element 8e etc..
Surround the metal parts that component 8a is a surface (left-hand face) open substantially rectangular parallelepiped.Encirclement component 8a
The other end (right end) of 7 lower heater unit 4B is set to the right lower quadrant of furnace body 1 as a whole and in a manner of surrounding.
1st plate 8b is metal plate, is formed with the opening (circular hole) for protection pipe 4b insert, and is set as closed and surrounds the above-mentioned of component 8a
One surface.The periphery of 1st plate 8b is fixedly welded in a manner of a closed above-mentioned surface surrounds component 8a, and above-mentioned opening
Periphery be all welded in protection pipe 4b.
2nd plate 8c is metal plate, is formed with the opening (circular hole) for protection pipe 4b insert, and is set as surrounding component 8a
Inside and the 1st plate 8b separate predetermined distance and parallel opposed.The periphery of 2nd plate 8c, which is fixedly welded on, surrounds component 8a, and
And the periphery of opening is all welded in protection pipe 4b.
That is, being formed with by the space that encirclement component 8a, protection pipe 4b, the 1st plate 8b and the 2nd plate 8c are surrounded for coolant liquid R
The refrigerant flow 8f (confined space) of flowing.In addition, being substantially confined air by the space that encirclement component 8a and the 2nd plate 8c are surrounded
Between, it is that there are the gas recovery room C2 of each gap of 7 protection pipe 4b and heater body 4a recycling after-flame gas from total.
7 support plate 8d are twisted plate (L-shaped plate components), with each lower heater unit 4B, that is, lower heater unit
Each heater body 4a of 4B is correspondingly arranged, and the lateral surface (right side) of the 2nd plate 8c is fixed on a surface with vertical position.?
In each support plate 8d, on another surface (horizontal plane) orthogonal with an above-mentioned surface, it is respectively arranged with holding element 8e.
That is, the horizontal plane of each support plate 8d is the setting face of holding element 8e.
Each holding element 8e is insulating element, is correspondingly set with each heater body 4a of lower heater unit 4B
It sets, and each heater body of the other end (right end) support of each heater body 4a by being connected to lower heater unit 4B
The load of 4a.In the same manner as holding element 7e, these holding elements 8e is to be formed as the substantially rectangular parallelepiped of V-shaped groove on top
The other end (right end) of formed body, each heater body 4a of lower heater unit 4B is carried with the state for snapping into the V-shaped groove
It is placed in the V-shaped groove.That is, the other end (right end) of each heater body 4a is supported on furnace body 1 using lower grounding parts 8.
Carburizing gas pipe 9 is the tubular part for being directed into carburizing gas in the P of carburizing room, and front end is in the P of carburizing room
Opening, and rear end is connected to carburizing gas supply unit 13.The rule that the carburizing gas pipe 9 will be supplied from carburizing gas supply unit 13
The carburizing gas of constant flow is expelled to carburizing room P.Exhaust pipe 10 is tubular part, and one end is open towards carburizing room P, another party
Face, the other end are connected to exhaust apparatus (diagram is omitted).The exhaust pipe 10 will be in the P of carburizing room via exhaust apparatus (vacuum pump)
Gas (the thermal decomposition gas etc. after carburizing gas or carburizing gas thermal decomposition) to external exhaust gas.
Air supply unit 11 is connected to above-mentioned 2 air supply chambers S1, S2, and the compressed gas K of after-flame is supplied to each
Air supply chamber S1, S2.In addition, above-mentioned compressed air K is the air for being pressurized to the authorized pressure of normal pressure or more.Gas recycling
Portion 12 connects above-mentioned 2 gas recovery rooms C1, C2, recycles after-flame gas from gas recovery room C1, C2.
The after-flame gas is mixed gas, further includes a part and accumulation of compressed air K other than compressed air K
Coal in each gap on the surface of the inner surface and heater body 4a of protection pipe 4b is chemically reacted and the dioxy that generates
Change carbon etc..Carburizing gas supply unit 13 supplies carburizing gas to carburizing room P via above-mentioned each carburizing gas pipe 9.The carburetted gas
Body is, for example, acetylene gas (C2H2)。
Coolant liquid supply unit 14 by coolant liquid R supply to above-mentioned top electrode portion 5, upper grounding parts 6, lower electrode portion 7 and under
Each refrigerant flow 5f, 6f, 7f, 8f of grounding parts 8.Above-mentioned coolant liquid R is, for example, water (cooling water).For example, the coolant liquid supplies
Portion 14 is the cooling device of refrigerant circulation type, and coolant liquid R is supplied to each one end of each refrigerant flow 5f, 6f, 7f, 8f, and from
Each other end of each refrigerant flow 5f, 6f, 7f, 8f recycles coolant liquid R, by heat exchange etc. will coolant liquid R it is cooling after supply to
Each one end.
Such coolant liquid supply unit 14 has to be added at least according to each layer, i.e. according to upper portion heater unit 4A and lower part
The function that the flow of coolant liquid R is adjusted in hot device unit 4B.That is, in upper portion heater unit 4A and lower heater unit
In 4B, the calorific value (turn on angle) of heater body 4a is different caused by existing due to up-down structure difference of furnace body 1 etc.
Situation.
For example, due to being provided with the biggish siege 3 of ratio of heat capacities in the lower part of furnace body 1, it is different from top, under furnace body 1
There is the tendency for being difficult to heat up in portion.In consideration of it, needing by by each heater body of unit heater 4B to the lower part
The turn on angle that 4a is powered is set as bigger than the turn on angle being powered to each heater body 4a of top unit heater 4A, thus will
The lower part and top of furnace body 1 are set as impartial temperature.In this case, because each heater body of lower heater unit 4B
The calorific value of 4a is bigger than the calorific value of each heater body 4a of upper portion heater unit 4A, so needing to improve respectively adding for lower part
The cooling capacity of hot device main body 4a keeps it higher than the cooling capacity of each heater 4a on top.
Then, the movement of the cementing plant A of present embodiment is described in detail.
In the case where implementing Carburization Treatment to treated object X using cementing plant A, by opening configuration in furnace body 1
Shutter door, treated object X is contained in carburizing room P and is positioned on siege 3.Also, by closing shutter door, make carburizing room
P becomes air-tight state.In this state, carburizing room P is set as by defined reduced atmosphere by vacuum pump work.
In addition, while being vacuumized by above-mentioned vacuum pump to carburizing room P, from heating electric source to each heater
Each heater body 4a of unit 4 (upper portion heater unit 4A and lower heater unit 4B) is supplied electric power, thus carburizing
Room P is heated to predetermined temperature (carburizing temperature).Also, carburizing room P is maintained in the range of stipulated time (carburizing time)
In carburizing temperature, carburizing gas supply unit 13 works during this period, so that the carburizing gas of regulation flow is continuously or interval
Property from the supply of carburizing gas pipe 9 to carburizing room P.
As a result, the carbon atom from carburizing gas penetrates into inside from the surface of treated object X, formed from treated object X
Surface to prescribed depth (carburizing depth) carburized layer.That is, passing through thermally decomposing to generate for carburizing gas in the P of the carburizing room
Carbon atom and thermal decomposition gas penetrate into treated object X by a part of thermal decomposition carbon atom generated (carbon) to be formed
Carburized layer.
Then, a part by above-mentioned thermal decomposition thermal decomposition gas generated and carburizing gas is outside from exhaust pipe 10
Portion's exhaust.For example, being acetylene gas (C in carburizing gas2H2) in the case where, hydrogen (H is generated as thermal decomposition gas2), the hydrogen
Gas (H2) be vented via exhaust pipe 10 from carburizing room P.
In cementing plant A, with formation like this to the same of the carburized layer (Carburization Treatment) of treated object X carburizing
When, coolant supply apparatus 14 work, thus by the upward electrode portion 5 of coolant liquid R, upper grounding parts 6, lower electrode portion 7 and under connect
Each refrigerant flow 5f, 6f, 7f, the 8f in ground portion 8 are supplied.As a result, position is by coolant liquid R near the both ends of each heater body 4a
It is indirectly cooling.That is, each holding element 5e, 6e, 7e, 8e for directly supporting the both ends of each heater body 4a are excellent via thermal conductivity
Good metal parts, that is, each 2nd plate 5c, 6c, 7c, 8c and each support plate 5d, 6d, 7d, 8d and coolant liquid R carry out indirect thermal friendship
It changes, so can be cooled effectively the both ends of each heater body 4a.
It therefore, according to the present embodiment, is by each holding element by both ends of the coolant liquid R to each heater body 4a
The supported portion of 5e, 6e, 7e, 8e support is cooled down indirectly, is able to suppress the thermal damage of each heater body 4a.According to this
The present embodiment of sample is able to extend the service life of each heater body 4a, so as to realize the reduction of maintenance cost.
Here, since it is desired that carburizing room P is set as uniform temperature, so unit heater 4B's to the lower part is each making
The turn on angle that heater body 4a is powered is different from the turn on angle being powered to each heater body 4a of top unit heater 4A
In the case where, coolant supply apparatus 14 adjusts to each refrigerant flow 5f, 6f, 7f, 8f according to above-mentioned turn on angle and supplies coolant liquid R
Supply amount.For example, the turn on angle being powered in unit heater 4B to the lower part is than the energization that is powered to top unit heater 4A
In the case that amount is big, coolant supply apparatus 14 makes to the supply amount ratio of refrigerant flow 7f, 8f coolant liquid R supplied to each refrigerant
The supply amount of the coolant liquid R of flow path 5f, 6f supply is more, also makes each heater body 4a's of lower heater unit 4B as a result,
Cooling capacity is higher than the cooling capacity of each heater body 4a of upper portion heater unit 4A.
According to such present embodiment, each of upper portion heater unit 4A and lower heater unit 4B can be eliminated
The imbalance of the thermal damage of heater body 4a, so as to improve the maintainability of each Heating body 4a.
In addition, in cementing plant A, each refrigerant flow 5f, 6f, 7f, 8f across protection pipe 4b and protection pipe 4b with
Gap between heater body 4a and it is opposed with position near the end of heater body 4a.That is, in cementing plant A,
Because each refrigerant flow 5f, 6f, 7f, 8f are configured adjacently the position near the end of heater body 4a, thus also can
The both ends of cooling each heater body 4a.
Here, generated by the thermal decomposition of carburizing gas a part of carbon penetrates into each 4 (upper portion heater of unit heater
Unit 4A and lower heater unit 4B) heater body 4a and protection pipe 4b between gap and coalification.The coal (carbon)
It is conductive, it is the substance that can make the resistance variations of heater body 4a.That is, operated for a long time in cementing plant A
In the case of, because the resistance of heater body 4a causes slowly to change from original state because of coal (carbon), heater master
The calorific value of body 4a also slowly changes.In this case, it is difficult to carburizing room P being heated to desired infiltration in cementing plant A
Carbon temperature.
In cementing plant A, after-flame processing periodically or is aperiodically carried out in order to remove above-mentioned coal.That is, at this
In cementing plant A, by supplying from air supply unit 11 by the upward electrode portion 5 of compressed air K and lower electrode portion 7, make to exist
It is two that the coal (carbon) and air in the gap between heater body 4a and protection pipe 4b, which chemically react being vaporized,
Carbonoxide etc., and be recovered to gas recovery room C1, C2 from above-mentioned gap as after-flame gas, so by gas recoverer 12 from
Gas recovery room C1, C2 is recovered to outside.
It is handled according to such after-flame, can sufficiently remove the gap being present between heater body 4a and protection pipe 4b
Coal (carbon), so that the resistance of heater body 4a be made to return to original state.That is, according to the present embodiment, at the after-flame
Reason, is reliably prevented from accumulation of the coal (carbon) to heater body 4a.
In addition, the utility model is not limited to the above embodiment, such as also it is conceivable that following variation.
(1) in the above-described embodiment, each refrigerant flow 5f, 6f, 7f, 8f are arranged in the end with heater body 4a
The neighbouring opposed position in position, but the utility model is not limited to this.For example, it is also possible to by each refrigerant flow 5f, 6f, 7f, 8f
It is configured at the opposite side of holding element 5e, 6e, 7e, 8e in Fig. 1, i.e. refrigerant flow 5f, 7f can be configured at holding element 5e, 7e
Left side, furthermore refrigerant flow 6f, 8f can be configured at the right side of holding element 6e, 8e.
(2) in the above-described embodiment, cooling is adjusted according to upper portion heater unit 4A and lower heater unit 4B
The flow of liquid R, but the utility model is not limited to this.For example, it can be as the flow for adjusting coolant liquid R according to each layer
Replacement, adjust coolant liquid R according to each supporting part, that is, top electrode portion 5, upper grounding parts 6, lower electrode portion 7 and lower grounding parts 8
Flow.
In addition it is also possible to omit the adjusting carried out like this according to each layer and each supporting part.
(3) in the above-described embodiment, the radical of upper portion heater unit 4A and lower heating unit 4B identical (7
Root), but the utility model is not limited to this.Because lower part in heat-insulated container 2 is there are siege 3, under treated object X
Portion is more difficult to heat than top.If it is considered that such situation, then the radical of preferred lower heater unit 4B is heated than top
The radical of device unit 4A is more.
(4) in the above-described embodiment, coolant liquid R is used as using water (cooling water), but the utility model is without being limited thereto,
It can according to need using the liquid higher than cooling water heat conductivity.
Description of symbols
A cementing plant
K compressed air
R coolant liquid
S1, S2 air supply chamber
C1, C2 gas recovery room
P carburizing room
X treated object
1 furnace body
2 heat-insulated containers
3 sieges
4 unit heaters
4A upper portion heater unit
4B lower heater unit
4a heater body (heater)
4b protection pipe (guard block)
5 top electrode portions (supporting part)
5a surrounds component
The 1st plate of 5b
The 2nd plate of 5c
5d support plate
5e holding element
5f refrigerant flow
Grounding parts (supporting part) on 6
6a surrounds component
The 1st plate of 6b
The 2nd plate of 6c
6d support plate
6e holding element
6f refrigerant flow
7 lower electrode portion (supporting parts)
7a surrounds component
The 1st plate of 7b
The 2nd plate of 7c
7d support plate
7e holding element
7f refrigerant flow
8 lower grounding parts (supporting parts)
8a surrounds component
The 1st plate of 8b
The 2nd plate of 8c
8d support plate
8e holding element
8f refrigerant flow
9 carburizing gas pipes
10 exhaust pipes
11 air supply units
12 gas recoverers
13 carburizing gas supply units
14 coolant liquid supply units
Claims (6)
1. a kind of cementing plant, which is characterized in that have:
Furnace body accommodates treated object；
Multiple heaters, it is horizontally extending in the furnace body；
Multiple guard blocks cover the heater；
Supporting part is respectively arranged at the both ends of the heater and supports the heater；
Carburizing gas supply unit supplies defined carburizing gas to the furnace body；
Air supply unit supplies the air of after-flame to the gap between the heater and the guard block,
The supporting part cools down the end of the heater indirectly.
2. cementing plant as described in claim 1, which is characterized in that
The supporting part has:
Holding element, the end abutment with the heater；
The holding element is fixed on the furnace body by support plate,
By the cooling support plate, the end of the heater is cooled down indirectly.
3. cementing plant as claimed in claim 1 or 2, which is characterized in that
The supporting part has:
Refrigerant flow is set near the end of the heater；
Coolant liquid circulates in the refrigerant flow.
4. cementing plant as claimed in claim 1 or 2, which is characterized in that
The heater is set as upper layer and lower layer in a manner of clipping the treated object.
5. cementing plant as claimed in claim 3, which is characterized in that
The heater is set as upper layer and lower layer in a manner of clipping the treated object.
6. cementing plant as claimed in claim 5, which is characterized in that be also equipped with:
Coolant liquid supply unit adjusts the flow of the coolant liquid according to each layer respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-213903 | 2017-11-06 | ||
| JP2017213903 | 2017-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209039565U true CN209039565U (en) | 2019-06-28 |
Family
ID=66333020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821664755.1U Active CN209039565U (en) | 2017-11-06 | 2018-10-12 | Cementing plant |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6799173B2 (en) |
| CN (1) | CN209039565U (en) |
| WO (1) | WO2019087732A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03291368A (en) * | 1990-04-06 | 1991-12-20 | Nippon Seiko Kk | Vacuum carburizing method and vacuum carburizing furnace |
| JP4458079B2 (en) * | 2006-09-27 | 2010-04-28 | 株式会社Ｉｈｉ | Vacuum carburizing equipment |
| JP5577573B2 (en) * | 2008-08-29 | 2014-08-27 | 株式会社Ｉｈｉ | Vacuum carburizing method and vacuum carburizing apparatus |
| JP5830586B1 (en) * | 2014-07-23 | 2015-12-09 | 株式会社Ihi | Carburizing equipment |
-
2018
- 2018-10-12 WO PCT/JP2018/038053 patent/WO2019087732A1/en active Application Filing
- 2018-10-12 JP JP2019550994A patent/JP6799173B2/en active Active
- 2018-10-12 CN CN201821664755.1U patent/CN209039565U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019087732A1 (en) | 2019-05-09 |
| JP6799173B2 (en) | 2020-12-09 |
| JPWO2019087732A1 (en) | 2020-04-09 |
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